Bucket for use in hardening furnaces



Ndv. 6,1928." 1,690,466

. r J. M. WASHBURN BUCKET FOR USE IN HARDENING FURNACES Filed Dec. 19,1925 fiz vela /tor: Jo/uv M Waskburn M [[55 Attorneys Patented Nov. 6,1928.

UNITED" STATES PATENrorI-" cE.

JOHN M. wAsnBUnm orHAR'rFoR ooNNEoTi o'r, nssioivon ro THE imnnnow MA-CHINE COMPANY, or HARTFORD, CONNECTICUT, A: conronnr on or common-BUCKET FOR USE IN HARDENING FURNACES.

Application filed December 19, 1925. Serial No. 76, 396:

The object of my invention is more par ticularly to produce a new formof bucket which will be less liable to distortion and more durable underthe influence of heat and use, and will receive and impart heat moreuniformly than buckets which have heretofore been used for similarpurposes.

My new form of bucket is especially useful in connection with gashardening furnaces which are provided with a chain or carrier by meansof which the buckets are used in series to convey their contents througha heated chamber and discharge said contents outside thereof and depositthem preferably into a supply of oil or other quenching material. In theaccompanying drawings, Figure 1, is a side view of a bucket embodying myinvention, a part being shown broken away to disclose a back wall insection.

Figure 2, is a front view of the bucket shown in Fig. 1. Figure 3, is aplan view of the same, and,-- Figure 4:, is a reduced scale plan view ofa development of a piece of material from which may be made that part ofthe bucket exclusive of the shank. Referring to the drawings, thenumeral 1, designates a bucket or container to which is secured asuitable shank 2, which, in the form shown, is for the purpose ofconnecting the bucket with a chain or carrier as is common in gashardening machines, but, heretofore,

gree, preventing even heating of the bottom of the bucket, on account ofthere being much extra thickness of material at a point near the middleof the bottom thereof. Buckets made in the manner describedweresupported practically in the center of the bottom, and unsupportedelsewhere. Hence, under the influence of heat and use, the bucketmaterial became deformed and cracked and frequent renewals werenecessary. To overcome this objection,I support the bucket from twosides or ends, by flanges which are preferably formed integrally withthe bottom of the bucket and secured to the shank at a suitable distanceaway from the bottom of the bucket, which results in a more evendistribution of heat and at the same time forms an improved support forthe bucket, thereby greatly increasing its durability and usefulness. To

this end, the bottom (Fig. 1) of the bucket is provided with the flangeforming extensions 3 and 4. Similarly, flanges or Walls 5 and 6, areturned substantially at right angles upward from the bottom, and thebucket is also provided with a back wall or flange 7 extendingpractically at right angles to the same height above the bottom of thebucket. For convenience in construction, the bucket may be made from anintegral blank of the developed form shown in Fig. 4, this blank beingof any suitable heat resisting sheet material. The back wall 7 may beformed by an extension of flange 5, by an extension of flange 6, or byan extension from both flanges 5 and 6, as shown, it is formed by anextension of, flangef), and is welded at one end to a side wall of thebucket and along one of its edges it is welded to the bottom of thebucket thereby making the bucket practically integral. The extensions 3and l, of the bottom are greferably riveted to the shank as shown inigs. l and 2. It will be seen that the bucket is provided with a curb orwall extending about the bottom of the bucket excepting at one of itssides, that side, which may be termed the front side, being preferablyleft open for the discharge of the articles contained and carried by thebucket.

By virtue of the fact that the front of the bucket is bent downwardly(see Fig. 1) the material at that area is better adapted to resistobjectionable warping and splitting when highly heated.

In the construction shown this bucket is made from a single piece ofsheet material and the back wall of the curb is cut integrallytherewith, folded into position, and welded at right and dependingflange sections with the latter converging toward a point of support ata substantial distance away from the bottom to facilitate distributionof heat about the latter. 1 I

3; A sheetmetal bucket comprising a bottom having upright flangesections and intermediate depending flange sections with ,cer-.

"tain of the upright flange section's. vepitendec'l to form anintermediate uprightfian e section. 1

4:. A metal bucket a b' ottoin hav- Y ing upright flange sectionsyandintermediate;

depending flange sections with certain of the 4 JOHN 'WAsHBURN.

upright flange sections extended toiorm a

